rockchip: rk3288: Add pinctrl driver

Add a driver which supports pin multiplexing setup for the most commonly
used peripherals.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/pinctrl/rockchip/Makefile b/drivers/pinctrl/rockchip/Makefile
new file mode 100644
index 0000000..251bace
--- /dev/null
+++ b/drivers/pinctrl/rockchip/Makefile
@@ -0,0 +1,8 @@
+#
+# Copyright (c) 2015 Google, Inc
+# Written by Simon Glass <sjg@chromium.org>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-$(CONFIG_ROCKCHIP_PINCTRL) += pinctrl_rk3288.o